The Troublesome Prism Lady

Having lost his parents at a young age, Naoki Hamura has become completely disillusioned. One day, he helps a young lady who doesn't know how to use a vending machine, and she takes a liking to him. Naoki, who spends his days constantly fighting with her, tries to distance himself from the young lady, Kotone Tenkuji, and be alone, but Kotone is the daughter of the Tenkuji conglomerate, so it's not going to be easy...